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Finding the Fourth Proportional to 160,392, 221,340.96 and 93,368.64

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Solution

The fourth proportional to 160,392, 221,340.96 and 93,368.64 is: 128,848.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,392 : 221,340.96 = 93,368.64 : x
  2. Step 2: Convert to fraction form
    160,392/221,340.96 = 93,368.64/x
  3. Step 3: Cross multiply
    160,392x = 221,340.96 × 93,368.64
  4. Step 4: Simplify right side
    160,392x = 20,666,304,411.49
  5. Step 5: Solve for x
    x = 20,666,304,411.49/160,392
  6. Step 6: Final answer
    x = 128,848.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.